Why does vBulletin allow users to visitor message themselves?

[MarkFL]

Hello all!

I was wondering about this after seeing that one of our users had sent a visitor message to themselves, and the visitor message contained links. I deleted the visitor message, and then got to thinking that no one should need to send a visitor message to themselves, but since this is allowed by vBulletin I thought perhaps there is a good reason.

I am considering making it to that our users cannot visitor message themselves, but I wanted to ask here first about the possible consequences. What do you all think?